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• Perimeter of a rectangle = 2(length + width) length = (x + 4) width = (2x - 7) P = 2[(x + 4) + (2x - 7)] = 6x - 6 = 42 x = 8 the length is: 12 cm the width is: 9 cm check...I did archimedes

  in Help with perimeter math problem? (9th grade algebra)? Comment by bullwinkle June 2021
• [(3y + 2)/5] - (y - 3)/10 = - 4 clear denominators...multiply by 10... 2(3y + 2) - (y - 3) = - 40 6y + 4 - y + 3 = - 40 5y = - 47 y = (- 47)/5 check Σ

  in How to solve algebra problem? Comment by bullwinkle June 2021
• [(3y + 2)/5] - (y - 3)/10 = - 4 clear denominators...multiply by 10... 2(3y + 2) - (y - 3) = - 40 6y + 4 - y + 3 = - 40 5y = - 47 y = (- 47)/5 check Σ

  in How to solve algebra problem? Comment by bullwinkle May 2021
• Perimeter of a rectangle = 2(length + width) length = (x + 4) width = (2x - 7) P = 2[(x + 4) + (2x - 7)] = 6x - 6 = 42 x = 8 the length is: 12 cm the width is: 9 cm check...I did archimedes

  in Help with perimeter math problem? (9th grade algebra)? Comment by bullwinkle May 2021